Virtual network segmentation

Virtual network segmentation Requirements and security baseline

Baseline alignment. Approved network baselines, boundary tests and documented exceptions. CIS IGs · DISA STIGs · DISA SRGs

• Virtual networks and tagging: scope, supported systems and accountable owners
• Uplink and trunk alignment: approved settings, access and dependencies
• Boundary validation: acceptance criteria, retention and exceptions

Virtual network segmentation Deployment and control mapping

• Scope and ownership: Virtual switch and server network separation aligned with the physical network and firewall design.
• Approved rollout and acceptance: Controlled pilot covering virtual networks and tagging and uplink and trunk alignment; acceptance test: trace a representative workload through its virtual port, tag, physical uplink and enforcement point, then test permitted and prohibited paths.
• Applicable requirements mapped to configuration, validation evidence and approved exceptions

Virtual network segmentation Client and user guide

• Using virtual networks and tagging within the approved service scope
• Recognizing failures and reporting a support request
• User responsibilities, access limits and service acceptance

Virtual network segmentation Technician training outline

• Virtual networks and tagging: records, configuration and diagnostic checks
• Uplink and trunk alignment: authorized administration and exception handling
• Boundary validation: validation, evidence and service handoff

Virtual network segmentation RDA technician workflow

• Identify and assess the requirement; plan the scope, accountable owner and required approvals
• Implement and verify: Trace a representative workload through its virtual port, tag, physical uplink and enforcement point, then test permitted and prohibited paths.
• Document the configuration and result; hand off operation, review exceptions and plan lifecycle changes

Virtual network segmentation Portal and access training

• Named operators, role boundaries and multifactor access where supported
• Service identities, protected credentials and emergency access
• Access approval, periodic review and removal

Virtual network segmentation Training module template

• Learning objectives and prerequisites: virtual networks and tagging: records, configuration and diagnostic checks
• Authorized practical exercise: Trace a representative workload through its virtual port, tag, physical uplink and enforcement point, then test permitted and prohibited paths.
• Knowledge check, observed result and instructor or responsible-owner sign-off

Virtual network segmentation Basic installation and acceptance

• Approved platform, owner, permissions and prerequisite checks
• Controlled pilot covering virtual networks and tagging and uplink and trunk alignment
• Acceptance test: Trace a representative workload through its virtual port, tag, physical uplink and enforcement point, then test permitted and prohibited paths.

Virtual network segmentation Advanced deployment and changes

• Extend virtual networks and tagging to additional approved scope
• Change uplink and trunk alignment with impact review and rollback
• Validate boundary validation after an approved change

Virtual network segmentation Technical configuration and integrations

• Virtual networks and tagging: configuration and dependency records
• Uplink and trunk alignment: supported interfaces and permission boundaries
• Boundary validation: diagnostic collection, retention and evidence export

Virtual network segmentation Operational audit and checklist

• Coverage and operating checks: virtual networks and tagging: coverage, health and unresolved exceptions
• Evidence sample: virtual switch, port-group and tag configuration; workload-to-workload and workload-to-network allowed and denied flow tests
• Review date and owner; pass or fail, exceptions, corrective action and retest evidence

Virtual network segmentation Tabletop exercises

• A required dependency or responsible provider becomes unavailable
• An access or configuration change interrupts the service
• Reported success conflicts with the observed business result

Virtual network segmentation Response playbook

• Assess the affected scope, evidence and business impact
• Authorize corrective action, escalation or rollback
• Verify service recovery, retain evidence and update the baseline

Virtual network segmentation Operational runbooks

• Validate virtual networks and tagging against the approved design
• Investigate a failure affecting uplink and trunk alignment
• Collect boundary validation evidence and confirm service acceptance

Virtual network segmentation Evaluation and lifecycle review

Selection and fit. Compare viable options against the business need, security requirements, existing systems and full operating cost. Record the reasons for the selection, the tradeoffs accepted and the conditions that would prompt a different choice.

Keeping the choice current. Follow supplier notices between scheduled reviews and reassess before renewal or a material change. Check ownership changes, renamed or retired products, subscription and licensing terms, pricing, capabilities and support commitments. Record the effect on security, data handling, integrations and service continuity. Assign an owner to approve adjustments or plan a transition, including data export and removal of access.

• Measured service outcome and practical acceptance results
• Supported scope, access, evidence availability and dependencies
• Licensing or provider terms, maintenance effort and lifecycle cost